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Method for positioning an optical fiber

  • US 3,938,895 A
  • Filed: 08/19/1974
  • Issued: 02/17/1976
  • Est. Priority Date: 08/19/1974
  • Status: Expired due to Term
First Claim
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1. A method for positioning an optical fiber in a holder for subsequent use in coupling a pair of similarly mounted optical fibers together, the method comprising the steps ofdefining an axis,positioning an optical fiber holder main body such that a first external surface thereof is in a predetermined relationship to the axis and a second external surface is in another predetermined relationship to a point on the axis,aligning an optical fiber essentially parallel with the axis,positioning the optical fiber along the axis so that the optical fiber is in juxtaposition to the main body over a portion of its length and an end of the optical fiber is at a position approximately at the point on the axis,passing light through the optical fiber so that light exits from the end of the optical fiber,positioning a position-sensitive photodetecting means on the axis so that the light exiting from the end of the optical fiber is incident thereon,detecting the light,generating a signal indicative of the position of the end of the optical fiber relative to the axis,moving the optical fiber normal to the axis in response to the signal until the optical fiber is coaxial with the axis, andsecuring the optical fiber to the main body to form an optical fiber holder in which the position of the optical fiber is in a known relationship to at least two external surfaces thereby allowing for precise positioning of the optical fiber.

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